LTX-2
Veo
Z-Image
Nano Banana
Flux

expand videos seamlessly with the AI video extender

Instantly expand your video's background using AI - no cropping, no black bars, and no reshooting. Perfect for repurposing content across any platform.

Add background expansion

Add background expansion

Generate seamless backgrounds that blend naturally with your original footage, no green screen required.

Get effortless aspect ratio conversion

Get effortless aspect ratio conversion

Resize vertical, square, or cropped content for Meta, TikTok, YouTube, and any platform specs instantly.

Make space for captions, CTAs, and branding

Make space for captions, CTAs, and branding

Expand the frame to add overlays without blocking your subject or cluttering the composition.

Social media resizing for any platform

Got TikTok content that needs to work on YouTube? Transform vertical videos into horizontal formats that look professionally shot for each platform.

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Fill 4K and wide screen formats perfectly

Convert vertical footage into cinematic widescreen by expanding the background with crystal-clear AI generation. Great for YouTube, presentations, or when you need that TikTok to fill screens perfectly.

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Create space for branding and overlays

Use AI to expand the background while keeping the hero of your video front and center. Perfect for branded content, tutorials, or social posts with on-screen CTAs that don't crowd your talent.

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How to extend a video with AI

BOOK A DEMO
  • 01

    Upload Video

    Upload your video and select Reframe

  • 02

    Choose Aspect Ratio

    Choose your target aspect ratio (16:9, 4:5, 1:1, etc.)

  • 03

    Preview

    Preview the expanded background and adjust if needed

  • 04

    Download

    Download your resized video ready for any platform

FAQs

Can I add text or logos without covering the subject?

Yes! Our tool lets you add overlay to video content while expanding the background to create space for captions, subtitles, branding, or call-to-action elements. You can expand video layout without cluttering the main subject.

Can I use this to repurpose vertical content for YouTube or desktop?

Yes! The AI extends the sides of vertical or square videos to expand video to full screen horizontal formats like 16:9. Perfect for social media resizing when you need to crop vertical to landscape—adapting TikToks or Instagram Reels to YouTube, presentations, or websites.

Can this tool make my video longer in time?

No, the AI video expander does not extend the duration of your video. It enlarges the visual background only - ideal for resizing your video to fit different screen dimensions.

Does it add black bars or stretch the video?

No. Our video background generator intelligently fills in the empty space with generated background content—so you get no black bars video results and can expand video naturally without distorting your subject.

What does the AI video extender actually do?

The AI video extender expands your video's background using AI-generated content. It doesn't crop or stretch the subject—it simply expands the canvas to fit wider or taller formats seamlessly.

What formats does it support?

You can video expand mp4, MOV, and other common video formats with our expand video background online tool. Our AI video resizer works automatically regardless of resolution or aspect ratio.

What is AI UGC and how does it work?

AI UGC uses realistic avatars and voice cloning to create user-generated content style videos without hiring creators. The technology generates authentic-looking testimonials, reviews, and product demonstrations that match the organic feel of real UGC.

user testimonials

“The best Webflow Templates”

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Sophie Moore
CEO at Webflow Agency

This is an amazing tool for structure, style and pitching

@Sebiji
Discord User

This is an amazing tool for structure, style and pitching

@Sebiji
Discord User

I enjoyed testing LTX Studio, it's freaking amazing. I love how the idea prompt works.

@Splat
Discord User

The filmmaking educational opportunities for this are incredile

@Billk
Discord User

I love LTX, thank you for this incredible tool

@Strubblerhaar
Discord User

What an amazing tool. brought my ideas to life in matter of seconds

@Bigwig416
Discord User

I just created a small video and it was amazing to see all the possibilities. Loved the deck!

@Celiaak
Discord User

Maximize your creative workflow

200%

Faster Creative Iterations

3x

Faster Collaboration Flow

Up to 90%

Vision Accuracy

This is an amazing tool for structure, style and pitching

@Sebiji
Discord User

“An amazing service”

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John Carter
Head of Marketing

This is an amazing tool for structure, style and pitching

@Sebiji
Discord User

“An amazing service”

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John Carter
Head of Marketing

This is an amazing tool for structure, style and pitching

@Sebiji
Discord User

“An amazing service”

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John Carter
Head of Marketing

user testimonials